Advanced number formatting

"Baserow currently only supports a very simplistic version of number formatting, as far as I can tell. So far all you can specify is the number of decimal places and whether negatives are allowed. Meanwhile, your average spreadsheet has quite sophisticated number formatting. You can specify decimal places, leading zeros, thousands separators, special purpose formatting (currency, percent, fractions, scientific notation, etc), and even custom formatting specs.

In my current use case, I wish Baserow would let me at least specify leading zeros so I could have integers of fixed width. However, an argument could probably be made for any of what your average spreadsheet offers.

While this would ideally be something added as additional options for a number column, it could also be provided via some sort of formula command to do number-formatting into an output column.

Here are the separate issues to introduce currency and percent field types."

Community request: https://community.baserow.io/t/better-number-formatting/1579